Table 1 Overview of environmental conditions at each station
Station | Cruise | Region | Regime | Date | Transect # | DCM depth (m) | Temperature (°C) | Salinity | Chlorophyll a (µg L−1) | NO3- + NO2- (µM) | NH4+ (µM) | dSi (µM) | PO43- (µM) | DOC (mg L−1) | DOP (µM) | DON (µM) | TN (µM) | TP (µM) | POC (µM) | PON (µM) | Bacteria (cells ml−1) | PPE (cells ml−1) | Nanophytoplankton (cells ml−1) |
18 | SAS | CAO | Multiyear ice | 8/13/21 | - | 22 | −1.7 | 32.73 | 0.4 | 1.1 | 0.10 | 0.9 | 0.92 | 1.3 | NA | NA | NA | NA | 3.2 | 0.4 | 4.0E+05 | 1.9E+03 | 4.8E+02 |
26 | SAS | CAO | Multiyear ice | 8/20/21 | - | 30 | −1.6 | 31.03 | 0.1 | 2.2 | 0.09 | 6.7 | 1.24 | 1.8 | NA | NA | NA | NA | 3.5 | 0.2 | 3.0E+05 | 1.8E+03 | 5.5E+02 |
38 | SAS | CAO | Multiyear ice | 8/29/21 | - | 33 | −1.6 | 30.37 | 0.2 | 1.7 | 0.09 | 6.5 | 1.40 | 1.6 | NA | NA | NA | NA | 3.6 | 0.3 | 3.7E+05 | 6.1E+03 | 3.1E+02 |
50 | SAS | CAO-influenced | Decaying multiyear ice | 9/4/21 | - | 28 | −1.5 | 30.73 | 1.1 | 1.2 | 0.06 | 5.8 | 1.35 | 1.5 | NA | NA | NA | NA | 4.0 | 0.3 | 3.9E+05 | 5.7E+03 | 5.8E+02 |
56_2021 | SAS | CAO | Decaying multiyear ice | 9/8/21 | - | 15 | −1.7 | 31.73 | 0.3 | 1.1 | 0.05 | 1.9 | 0.93 | 1.3 | NA | NA | NA | NA | 6.4 | 0.4 | 1.0E+06 | 1.3E+04 | 8.0E+02 |
36 | ATWAICE | MIZ | Atlantic open water | 7/11/22 | 1 | 20 | 3.2 | 34.49 | 1.7 | 3.6 | NA | 3.6 | 0.33 | NA | 0.00 | 6.2 | 9.9 | 0.31 | 15.7 | 1.8 | 5.8E+05 | 6.8E+03 | 7.9E+03 |
37 | ATWAICE | MIZ | High-melt zone | 7/11/22 | 1 | 35 | −1.4 | 34.27 | 1.2 | 7.7 | NA | 3.7 | 0.58 | NA | 0.00 | 6.5 | 14.2 | 0.50 | 12.8 | 1.2 | 6.2E+05 | 1.9E+03 | 4.0E+03 |
42 | ATWAICE | MIZ | Pack ice (first year ice) | 7/12/22 | 1 | 20 | −1.6 | 33.89 | 1.0 | 4.6 | NA | 2.8 | 0.40 | NA | 0.04 | 6.5 | 11.2 | 0.44 | 8.1 | 0.7 | 5.5E+05 | 2.0E+04 | 4.1E+02 |
57 | ATWAICE | MIZ | Atlantic open water | 7/18/22 | 2 | 8 | 5.6 | 34.74 | 0.6 | 4.0 | NA | 3.3 | 0.38 | NA | 0.12 | 6.8 | 10.8 | 0.50 | 9.1 | 0.8 | 7.0E+05 | 4.0E+03 | 2.3E+03 |
56_2022 | ATWAICE | MIZ | High-melt zone | 7/17/22 | 2 | 31 | −1.2 | 34.08 | 9.0 | 0.8 | NA | 3.4 | 0.39 | NA | 0.28 | 12.5 | 13.3 | 0.67 | 63.4 | 6.3 | 8.0E+05 | 1.4E+03 | 2.0E+04 |
61 | ATWAICE | MIZ | High-melt zone | 7/18/22 | 2 | 36 | −0.9 | 34.16 | 4.8 | 2.7 | NA | 3.1 | 0.32 | NA | 0.17 | 7.5 | 10.2 | 0.49 | 30.2 | 3.5 | 9.4E+05 | 3.1E+03 | 1.2E+04 |
65 | ATWAICE | MIZ | Pack ice (first year ice) | 7/19/22 | 2 | 11 | −1.4 | 33.22 | 8.8 | 0.0 | NA | 0.1 | 0.01 | NA | 0.17 | 5.4 | 5.4 | 0.18 | 46.7 | 4.1 | 6.0E+05 | 3.2E+03 | 1.7E+03 |
108 | ATWAICE | LF | Land-fast ice | 8/6/22 | - | 25 | −1.4 | 31.38 | 0.3 | 0.3 | NA | 0.2 | 0.03 | NA | 0.00 | 1.0 | 1.3 | 0.00 | 7.4 | 0.2 | 3.8E+05 | 2.1E+03 | 7.6E+01 |
